| A | B |
|---|
| term used to describe all the salts | Halite |
| term used to describe how a mineral reflects light | Luster |
| density compared to water's density | Specific gravity |
| color of mineral in powder form | Streak |
| softest mineral on Mohs scale of hardness | Talc |
| hardest mineral known | Diamond |
| mineral splits in a plane | Cleavage |
| largest group of rock-forming minerals | Silicates |
| Quartz has which shape internally | Hexagonal |
| As magma cools, its __________ combine into compounds that form a crystal structure, and it becomes a mineral | Atoms |
| Minerals are made of one or more | Elements |
| What makes a mineral an ore | Mined for a profit |
| Which of the following is the best choice for a mineral? coal, salt, sugar, or wood | Salt |
| The largest group of rock-forming minerals is called the | Silicates |
| The hardness of quartz is 7. This indicates that quartz will scratch which of the following minerals? talc, apatite, topaz, or calcite | Talc, apatite and calcite |
| What is the characteristic of minerals that is being tested with scratching various materials? | Hardness |
| What two properties make a mineral a gem? | Rare and beautiful |
| What is the most common element in Earth's crust? | Oxygen |
| Oxygen and silicon make up almost __________ of Earth's crust | 75% |
| The arrangement of __________ determines the type of crystal for minerals | Atoms |
